JPS6016923Y2 - dry developing device - Google Patents
dry developing deviceInfo
- Publication number
- JPS6016923Y2 JPS6016923Y2 JP15668779U JP15668779U JPS6016923Y2 JP S6016923 Y2 JPS6016923 Y2 JP S6016923Y2 JP 15668779 U JP15668779 U JP 15668779U JP 15668779 U JP15668779 U JP 15668779U JP S6016923 Y2 JPS6016923 Y2 JP S6016923Y2
- Authority
- JP
- Japan
- Prior art keywords
- scraping plate
- developer
- developing device
- ferromagnetic material
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
Description
【考案の詳細な説明】
（技術分野）
本考案は、電子写真装置に使用される乾式現像装置に関
する。[Detailed Description of the Invention] (Technical Field) The present invention relates to a dry developing device used in an electrophotographic device.
（従来技術）
２成分現像剤を使用する現像装置では現像スリーブ上か
ら掻取られた現像剤が、永久磁石の磁束に影響されて流
下し難くなるといった問題を有している。(Prior Art) A developing device using a two-component developer has a problem in that the developer scraped off from the top of the developing sleeve is affected by the magnetic flux of the permanent magnet and becomes difficult to flow down.
公開昭５２−８０８４４３公報に開示された装置は掻取
り板を強磁性材によって形成することによりこの種の問
題を解消したものであるが、掻取り板を斜めに配設して
上端を現像スリーブの表面に当接した場合は、下端から
現像スリーブ内の永久磁石に戻る磁束に災わいされて板
上を流下した現像剤が掻取り板の下端につらら状に付着
してしまうといったあらたな問題がある。The device disclosed in Publication No. 52-808443 solves this kind of problem by forming the scraping plate from a ferromagnetic material, but the scraping plate is arranged diagonally and the upper end is connected to the developing sleeve. If the developer comes into contact with the surface of the scraping plate, a new problem arises in that the developer that flows down the plate due to the magnetic flux returning from the bottom edge to the permanent magnet in the developing sleeve will adhere to the bottom edge of the scraping plate in an icicle pattern. There is.
（目 的）
本考案はかかる問題に鑑みてなされたもので、その目的
とするところは、掻取った現像剤の流下を促進すると同
時に効果的な攪拌作用を行なわせることのできる改良さ
れた現像装置を提供することにある。(Purpose) The present invention was made in view of the above problem, and its purpose is to provide an improved developer that can promote the flow of the scraped developer and at the same time provide an effective stirring action. The goal is to provide equipment.
（構 戊）
そこで、以下に本考案の詳細を図示した実施例に基づい
て説明する。(Structure) Therefore, the details of the present invention will be explained below based on illustrated embodiments.
第１図は、本考案の一実施例を示すものであって、図中
符号１は、表面に永久磁石２を配設した固定マグネット
ホルダーで、その周囲には非磁性材よりなるスリーブ３
が図示しない駆動機構に駆動されて回転するように構成
されている。FIG. 1 shows an embodiment of the present invention, in which reference numeral 1 denotes a fixed magnet holder with a permanent magnet 2 disposed on its surface, and around it is a sleeve 3 made of a non-magnetic material.
is configured to be rotated by being driven by a drive mechanism (not shown).
５は、上端をスリーブ３の表面に当接させ、下部を斜め
下方に延出させた強磁性材よりなる掻取り板で、この下
方には同じく強磁性材によって形成された攪拌羽根車４
が羽根の先端の回動軌跡を掻取り板５の下端に近接させ
るように軸設され、図示しない駆動機構に駆動されて回
転するよう構成されている。Reference numeral 5 denotes a scraping plate made of a ferromagnetic material whose upper end is in contact with the surface of the sleeve 3 and whose lower part extends obliquely downward. Below this scraping plate is a stirring impeller 4 also formed of a ferromagnetic material.
is arranged so that the rotation locus of the tip of the blade approaches the lower end of the scraping plate 5, and is configured to be rotated by a drive mechanism (not shown).
上述した実施例において、マグネット１上の永久磁石２
から出た磁束は、スリーブ３上に当接した強磁性材より
なる掻取り板５の内部を通ってその下端から再びマグネ
ットホルダ１上の永久磁石２へ戻る流れを示すため、ス
リーブ３から掻取られた現像剤は掻取り板５上をスムー
ズに滑り落ちる。In the embodiment described above, the permanent magnet 2 on the magnet 1
The magnetic flux emitted from the sleeve 3 passes through the inside of the scraping plate 5 made of ferromagnetic material in contact with the sleeve 3 and returns to the permanent magnet 2 on the magnet holder 1 from its lower end. The removed developer slides smoothly on the scraping plate 5.
そして、この現像剤が掻取り板５の下端まで滑り落ちて
くると、そこに形成された磁極に保持されて次々とつら
ら状に垂れ下がるが、この間にトナーをまだ十分に担持
しているキャリアとトナーを消費したキャリアとが入り
混り、ついでこの下端に近接して回動する攪拌羽根車４
により機械的に掻取られ、さらに強磁性材製のこの攪拌
羽根４上で上述したと同様の攪拌作用が営まれた上、現
像槽内の現像剤と十分に混り合う。When this developer slides down to the lower end of the scraping plate 5, it is held by the magnetic poles formed there and hangs down one after another in the form of icicles. The toner is mixed with the carrier that has consumed the toner, and then the stirring impeller 4 rotates close to the lower end of the carrier.
The toner is mechanically scraped off by the ferromagnetic agitating blade 4, which performs the same agitating action as described above, and is sufficiently mixed with the developer in the developer tank.
（効 果）
以上、述べたように本考案によれば、強磁性材よりなる
掻取り板を斜めに配設したので、現像スリーブの配設位
置の如何に関わりなく現像剤を必要な箇所に戻すことが
できる。(Effects) As described above, according to the present invention, the scraping plate made of ferromagnetic material is arranged diagonally, so that the developer can be applied to the necessary location regardless of the position of the developing sleeve. It can be returned.
また強磁性材よりなる攪拌羽根車をこの掻取り板の下端
に近接して配設したので、掻取り板の下端に現像剤の溜
りを形成させることなくこれを次々と羽根車によって機
械的に落下させることができるばかりでなく、掻取り板
下端から羽根車を経て永久磁石へと流れる磁束を利用し
て掻取り板の下端と羽根車の羽根の先端に形成される磁
極により、キャリアの磁気的混合作用を行なわせてより
均一な攪拌作用を行なわせることができる。In addition, since a stirring impeller made of ferromagnetic material is placed close to the lower end of the scraping plate, the developer can be mechanically removed one after another by the impeller without forming a pool of developer at the lower end of the scraping plate. Not only can the carrier be dropped, but it also uses the magnetic flux flowing from the bottom end of the scraping plate through the impeller to the permanent magnet to create magnetic poles formed at the bottom end of the scraping plate and the tips of the blades of the impeller. It is possible to perform a more uniform stirring action by performing a specific mixing action.
第１図は、本考案の一実施例を示す装置の構成国である
。
１・・・・・・マグネットホルダ、２・・・・・・永久
磁石、３・・・・・・スリーブ、４・・・・・・掻取り
板、５・・・・・・攪拌羽根車。FIG. 1 shows the constituent countries of an apparatus showing an embodiment of the present invention. 1... Magnet holder, 2... Permanent magnet, 3... Sleeve, 4... Scraping plate, 5... Stirring impeller .
Claims (1)
させた乾式現像装置において、上記掻取り板を斜めに配
設してその上端を上記現像スリーブの表面に当接させる
とともに、強磁性材よりなる攪拌羽根車を上記掻取り板
の下端に近接させて配置したことを特徴とする乾式現像
装置。In a dry type developing device in which a scraping plate made of a ferromagnetic material is brought into contact with the surface of a developing sleeve, the scraping plate is arranged diagonally and its upper end is brought into contact with the surface of the developing sleeve, and the scraping plate made of a ferromagnetic material 1. A dry type developing device, characterized in that a stirring impeller made of material is disposed close to the lower end of the scraping plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15668779U JPS6016923Y2 (en) | 1979-11-12 | 1979-11-12 | dry developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15668779U JPS6016923Y2 (en) | 1979-11-12 | 1979-11-12 | dry developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5675758U JPS5675758U (en) | 1981-06-20 |
| JPS6016923Y2 true JPS6016923Y2 (en) | 1985-05-25 |
Family
ID=29668086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15668779U Expired JPS6016923Y2 (en) | 1979-11-12 | 1979-11-12 | dry developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6016923Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9238616B2 (en) | 2001-06-11 | 2016-01-19 | Xenoport, Inc. | Prodrugs of gaba analogs, compositions and uses thereof |
-
1979
- 1979-11-12 JP JP15668779U patent/JPS6016923Y2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9238616B2 (en) | 2001-06-11 | 2016-01-19 | Xenoport, Inc. | Prodrugs of gaba analogs, compositions and uses thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5675758U (en) | 1981-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3015305A (en) | Development of electrostatic images | |
| JPS6016923Y2 (en) | dry developing device | |
| US3669072A (en) | Developer apparatus | |
| JPS5933915B2 (en) | magnetic brush phenomenon device | |
| US5115276A (en) | Magnetic brush development apparatus | |
| CN114288902A (en) | Building material mixing equipment capable of automatic quantitative distribution and using method | |
| US4459345A (en) | Stationary and moving magnets forming a magnetic brush developer apparatus and method | |
| JPH0112273Y2 (en) | ||
| JPH0710366Y2 (en) | Development device | |
| JP2819550B2 (en) | Developing device | |
| JPS54150135A (en) | Developing device of electrophotographic copiers and others | |
| JPS61186974A (en) | Developing device | |
| JPH0410605Y2 (en) | ||
| JPS6347872Y2 (en) | ||
| JP2541948B2 (en) | Image forming method | |
| JP2549059Y2 (en) | Developing device | |
| JP2524038Y2 (en) | Developing device for image forming apparatus | |
| JPS6347874Y2 (en) | ||
| JPS6095465A (en) | Developing device for electrostatic latent image | |
| JPH03150580A (en) | Supplying method for initial motion developer | |
| JPH085479Y2 (en) | Developing device for electrophotographic device | |
| JPS57186776A (en) | Developing device | |
| JPS5538519A (en) | Method and device for discharging of developer | |
| JPS62209570A (en) | Developping device for copying machine and the like | |
| JPS59113461A (en) | Developing device |